Torch-burner construction



May 19,1925. 1,5s,s34

' O. J. GROEHN TORCH BURNER CONSTRUCTION Filed Nov. so, 1921 2Sheets-Sheet 1 o o o o e G 0H@ @I Groei/2, T

May 19, 1925. 1,538,634

' o. J. GROEHN TORCH BURNER CONSTRUCTION Filed Nov. so, 1921 2Sheets-Sheet 2 y 8, 5f y )5,2 y] l i i l I @f Hl J l d? .L -Z

. a Y /v' Patented May 19, 1925..

UNlTEosTAJTi-:s

P Ala-'I f NT OFFICE@4 OTTO J. GRCEIIN, or DETROIT, MICHIGAN, assIGNonTo CLAYTON & LAMBERT MANU- FACTURING COMPANY, or DETROIT, MICHIGAN, aCORPORATION or MICHIGAN.

TORCH-BURNER CONSTRUCTION.

' Application mea November so, 1921'. semi N0.`51s,ss2. .i

VTo all whom t may concer/n:

Be it known that I, @TTC J. GROEHN, a citizen of the United States ofAmerica, residing atDetroit, in the county of Wayne and State ofMichigan, have invented cer# tain new and usefulr Improvements in Torch-Burner Constructions, of which lthe following is a 'specificatie-n,reference beinghad therein to. theaccoinpanying drawings.V

`This invention relates to burners and refers more particularly to`oilburners or the likeof that classl which are used in connection withblow torches or similar devices. It is one of the objects of theinvention to provide an improved construction in which theburner orificeis prevented from clogging and more particularly-to provide a means forcleaning the discharge orifice or nozzle of the bui-nei` so that it canbereadr ly maintained in operative condition. An essential feature ofthe invention is to so construct and arrange this clean-out member thatit is readily availablefor use but is so constructed and arranged thatit cannot :Tube jammed against the discharge orifice of the burner norcan it be withdrawn so as to permit the flame to backefire or the gas:to escape from the rear of the clean-out membei'.

The invention contemplates the novel arrangement wherein the controlvalve is locatedat a position distant from the discharge orifice andVthe cleaning nozzle ar ranged adjacent the final discharge 'orifice butlprimarily adapted `toform a'cleanfout `member' and not a shut-OE valve`In case the clean-out member is adjusted by a screw thread it is ofcourse possible to exert a. treinendous amount of force on the seatshould the clean-out member be free to move for-k ward to an unlimitedextent. .In the present novel construction I not only7 limitthe forwardmovement of the clean-out member `but also limit the rearfmovement.Other fea` tures of the invention reside in such arrangements `andcombinations of parts as I will more fullyhereinafter appear.

In the drawings: l

Fig. l is a vertical sectional view partly in elevation of a burnerembodying my invention; I i

Fig. 2 is a sectionahview taken `on theline 2-2 of Fig.`1, and l Fig. 3is an enlarged fragmentary sectional viewshowing a modifiedconstruction. y

Describing .in detail the' particular embodiment of my invention `shownin the drawings, A designates ythe tank of a blow torch and B ltheburner mounted thereon and secured to the tank by a suitable stem C.Fuelfrom the tank is fed to the burner upwardly through the tube erstemC and through the preheating ychamber D which, because of the upwardoff-'set ar- `i'angeinent of the tube D compels the fuel to passadjacent the hot wall of the charnber E before reaching the vvalve seatF. The latter is controlled4 by a needle valve F and when this valveisopenedthe fuel i passes up through thepassageway G tothe dischargeorifice or outlet H.

As shown inl detail in Fig. l this discharge orifice H ismounted inaremovable mem-I ber H and the gas passing the discharge orifice H mixeswith air through the ports I and is burned in the combustion chamber E.Owing to the proximity ofthe outlet orifice H to the combustion chamberE it is advantageous to locate the control valve F at a point remotefrom this discharge orifice but some means must be provided to keep theorifice H open in case carbon or other mattei' should be deposited inthel orifice. In place of using a separate valve at this` point Ipreferably employ a .clean-out needle J carried by a stem J and adaptedto be projected into and through the orifice H as desired. -rIhe stein Jis screw-threaded at J 2 in a. rearwardly extending nipple K and iscontrolled by a hand-wheel J3 mounted on the vend of the stem J andlocated preferably above the hand-wheel F3 which is mounted on the stemF 2which carries the needlevalve F. In order to limit the forward.movement ofV this clean-out member the stein J is provided ywith anenlargement L which upon the eXtreme forward movement of the stein Jwill strike against the abutment L while the outward packing M While theabutment Lzis carried Aif) by a second collar or sleeve portion N, `Inthis manner theA parte 'aire ndt only' economical'ly constructed butlcan be readily assembled and taken apart. Moreover this novelarrangement of parte prevents the i-njuryito `-jtheicl-ischarge orifice-H which is an important feature since it is necessary to maintain therelative proportionv of .thevoriiice to the other parts of thecombustion chamber in order to secure the imoet eiio'ient combustion ofthefuel, While limiting the rearward 'movement prevents accidents whichmight arise owing to the operator' inad- 'veit'ently"withdrawing theentire clean-'out member lamil thus prevent'fthe' back-firing or'burning 4of the yfuel at a point other than the discharge orifice H; f

" x'The burner is `provided With the usual drip cup-@for priming orpreheatirrg the burnerv at the sta-rt and 'the 4usual hook Q forsupporting the tool to :be heated. In connection with this hooilrrvthere iis-also vpro-- vided the pliig l which `is tapered,l and inshipping the burner the plug is forced tightly into placefAs tliisp'lugis preferably formed' ofwvood or other semi-'compressible material'tserv-es as agua-rd or protection 'to `prevent*the breaking. of thehook.` Prior to the adoption of this novelfarraiigement a largeninnberof'these 1liofol'is vwere broken in shipping the burner i'tliusnecessitating replacing or repairing large numbers vof -burners, Whereasin the present construction this diliicnlty isentirelly overcome. e

`In the` particular "construction shown in Figfthe corresponding partsyare identical With those shown in l With theexcep-y tion that the"clean-out member is not yadjusted by a -screvv thread; place 'of thescreriv threaded stein the cie.an=out member yS in Fig; '3 iscarrieds'tem S which has a rack S24 engagedby a pinion T. The latter isrocked about its pivot T by the larm T2. In this Way tliecleanout membercan be quickly adjusted to" perform its cleanout functionaiidimmediately return to its inoperative'p-osition. lSuitable stopsfV andV" limitwtlie forward and rearward move-` ment of the 'clean-outnienjiber` This" constructioi'iis advantageous lnot only because of theease with yvhi'cli't-lie-l clean-out member may be manipulated butit'furtlier serves to prevent'tlie clean-out member from being ljammedto its seat and even ifitwerepermitted to reach the seatthe expansion,due

to heat, Would, not destroy the latter as the-n rack Woulds'imply moveback and rocll the pinion and armT2. I llVhatI claim as my invention is:

1. In a burner for blow :torches or vthe like,

the combination with 'a fuel passage ljiaving' a discharge nozzle, of anipple in rear of said nozzle, a stem extending through said nipple andadjustable by a threaded engagement with the nipple toward and from saidnozzle, a clean-out member carried by said ste-inzanc'l adapted ,to berecipi-'ocateditlirough said nozzle, an enlargement upon said stem, anabutment member detachably secured to said nipple engageable with saidenlarge-v cliargeforice, of alirip'pl'e in alignment with i the orifice,a-stem threaded'ly adjiistablein 'saifd vnipple toward land avv'ay fromsaid Ioritice, acflean Jout member 'carried by said stem s adapted to'be reciprocated 'through saidA oi"- fice, a' collar surrounding saidnipple having a reduced portion fitting said stem, a collarsii-rroundi'n'g the reduced portion joff the collfai` kfafor'e'saidliavin'g fan annular shoulder, andan enlarge-ment on 'saidstenialternately engageable with the outer end of the first'fcolilarand thean'nularfsli'oulder of the 'second collar for limitin'g'the movement ofsaid stem ytoward land afivaiy from said orilice, and means' remote fromand independent of the -c'lean out member and stein forcontrolling'the'tlow of fuel throiigh said passage.k V' 5 In" va burnerfor bloT torches or the like, the combination with a fuel passage having'a 'discharge nozzle'o'f. aY valve for controllling the passageI of fuel'tosaid nozzle, a stem adapted to gradually and positively moved" towardand 'away 'from 'said` Ano'zzle, a clean-out member carried by` the stemand fenga'geable With the novz'zle,'n'eans carried by 'the stematafpointr lremote from vthe fuel passage` for s'lidablyy housing the 'fstein, and means Icooperating therewith `for limiting the movement ofthestem 'towardthe nozzle for preventing injury to the same and limitingmovement of the stem awafy'from the nozzle to prevent accidentalcomplete withdrawal of the stem and 'convsequent escape of the fuel fromthe said fuel passage Ithrough the ysaid stem housing.

4. Inv a burner for blo-vv torches or the like,

the combination With fuel passage'ha-ving a lthe movement of the stemtoward the nozstem housing comprising a pair of telezle for preventinginjury to the same and sooped abutment members each having a limitingmovement of the stem away from rearwardly extending portion embracingthe 10 the nozzle to prevent accidental complete stem.

Withdrawal of the stem and consequent es- In testimony whereof vI affixmy signature.

cape of the fuel fromthe said fuel passage through the saidA stemhousing7 saidl n OTTO J. GROEHN.

